Multiscale Erosion Surfaces of the Organic-Rich Barnett Shale, Fort Worth Basin, USA

Figure 3

(a) Thin section photo shows upper sharp straight contact and lower scoured contact. (b) Thin section photo shows upper scoured contact and lower irregular contact. (c) Core photo shows lower sharp irregular contact and upper gradational contact. (d) Thin section photo shows lower contact that cut down into underlying facies.

(a)

(b)

(c)

(d)